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Nutrition exam 3 > Swine nutrition > Flashcards

Swine nutrition Flashcards

1
Q

what is a barrow

A

castrated male pig

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2
Q

what is a gilt

A

young female pig not having produced her first litter

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3
Q

what is the technical definition of a pig

A

less than 120 days old

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4
Q

what is the technical definition of a hog

A

greater than 120 days old

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5
Q

what is a weaner

A

young pig between 18-60d old

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6
Q

what is an early weaned pig

A

pigs weaned at less than 21 days old

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7
Q

swine gestation

A

115 days

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8
Q

lactation time

A

18-25 days

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9
Q

grow-finish

A

production phase from 60-260lbs (market weight)

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10
Q

wean-to-finish

A

production phase from 10-260lbs

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11
Q

nursery

A

production phase from weaning to 60lbs

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12
Q

feeder pigs

A

40-60lb pigs sold for feeding to market weight

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13
Q

market hogs

A

hogs weighing 240-280lbs, ready for slaughter

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14
Q

production phases of the breeding herd (6)

A
  • boar
  • gilt development/pre-breeding
  • breeding
  • gestation
  • farrowing/lactation
  • weaning to rebreeding
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15
Q

production phases of growing pigs (3)

A
  • nursing sows/creep feeding
  • nursery (3 phases)
  • grow-finish (4 phases)
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16
Q

what is adfi

A

average daily feed intake

17
Q

what is f/g or g/f

A

feed conversion = feed efficiency

18
Q

what is npd

A

non-productive sow days (time sows are not pregnant or lactating)

19
Q

what is npd goal

A

fewer than 50/female/year

20
Q

wean-estrus interval

A

days from weaning to rebreeding (4-7 days)

21
Q

farrowing rate

A

% of females mated that farrow (85%+)

22
Q

litters/sow/year

A

> 2.2

23
Q

aiao

A

all in all out production flow

24
Q

do gilts or barrows have higher amino acid requirements

A

gilts

25
Q

do gilts or barrows have greater lean growth potential

A

gilts

26
Q

do gilts or barrows consume more feed

A

barrows

27
Q

when do you start feeding gilts and barrows separate diets in split-sex feeding

A

at 80lbs

28
Q

what percentage of total cost of production is feed

A

65%

29
Q

what causes variability in nutrient requirements

A
  • genetics
  • gender
  • health
  • housing conditions
30
Q

limiting essential amino acids

A
  • lysine
  • methionine
  • threonine
  • tryptophan
31
Q

what macrominerals are supplemented (4)

A
  • calcium
  • phosphorus
  • sodium
  • chloride
32
Q

what microminerals are supplemented (6)

A
  • Fe
  • Cu
  • Zn
  • I
  • Mn
  • Se
33
Q

what are nursery diets composed of (6)

A
  • lactose
  • dried whey
  • spray dried porcine plasma
  • fish meal
  • spray dried blood meal
  • supranutritional levels of Cu (200ppm, 100x higher) or Zn (2000ppm, 20x higher)
34
Q

importance of spray dried porcine plasma

A

amino acids, passive immune protection

35
Q

when are pigs fed ad libitum v restricted

A

always ad libitum except in pre-breeding, breeding, gestation

Nutrition exam 3 (8 decks)

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